Non-slip fitness gravity ball



FIG. 1 is a perspective view of a non-slip fitness gravity ball showing my new design;

FIG. 2 is a front view thereof, the rear being a mirror image;

FIG. 3 is a left side view thereof, the right side being a mirror image;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines and areas within illustrate portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a non-slip fitness gravity ball, as shown and described. 